Cotter-pin.



P. E. KELECOM.

CUTTER PIN- v APPL'I'CATION FILED JAN-5.19M a 1,280,756. Patented Oct.8,191&

INVENTOR ATTORNEY Much time is wasted in separating the ends TED "STATES PATENT OFFICE.

PAUL E. KELECOM,- OI PARIS, FRANCE.

COTTER-PIN.

To all whom z'tmay concern:

'Be it known that I, PAUL E. KELEC01\ I, a subject of the King of Belgium, and resident of Paris, France, have invented certain 'newand useful Improvements "1n (lotter-Pins, of which the following is a specification.

This invention is an improved cotter-pm adapted for use for the same general purposes as ordinary cotter-pins. The invention" has for its obJect to 'simpllfy the com .struction,' facilitate the insertion and removal of the pin, increase its resistance to shearing action while muse, and better adapt it for re-use after once having been .used and extracted.

In the ordinary cotter-pm formed of two semi-cylindrical vsections connected by. a loop, the resistance operating at one t1me is usually only that offered by one of the two,

sections. The straightening of one section to facilitate the withdrawal of the pin is often interfered with by the juxtaposition of the other section and the loop does not present sufficient surface to permit the pin to be effectively gripped and pulled out.

of the sections of the ordinary pin when it is first inserted and time is also wasted in try-- 'ing to get the tWo ends close together and parallel to facilitate the withdrawal. For this reason, workmen often omit cotter-pins where the should be used. f

In my 1m roved construction, the cotterpin is forme essentially ofthree parts whichv may be, and preferably are, integral. The body of the pin is formed of a solid piece of .wire of cyllndrical or any other desired cross-sectional form and is of such length as to extend through the bolt, nut or otherpart to be held and leave a projecting end which may be bent over in any direction, as, for instance, by a light hammer blow. At the opposite end of the body there is formed an abutment or shoulder which is of such size, shape and position as to limit the extent to which the body portion may be inserted.

Beyond this abutment, there is a further section. of wire which may be, and referably is, substantially straight and whic provides means whereby the cotter-pin may be gripped between the fingers or with a pair'of pliers to withdraw the cotter-pin or to hold it against rotation while the opposite end is being straightened.

I Specification of Letters Patent.

Application filer! Ianuary 5, 1918. Serial No. 210,549.

body,

cotter-pm and as the cotter-pin me be efpoint or end, the abutment for limitinglthe Patented 0m, 1918.

By means of my improved construction, the resistance-1s reatly increased as the re- 7 slstance of a solid wire is more than double the resls'tance of two semi-cylindrical secnone of the same diameter. "As only one section, namely the projecting end of the has to be straightened to withdraw the 'point may be bent into or out of alinement and the pin inserted or withdrawn, a great deal of time is saved.

My invention may assume various difierout forms in each of "which thfe are the three features hereinbefore referred to, namelyithe body portion, with its bendable extentof insertion, and the projecting ead or handle portion by means of which the pin may be withdrawn. I v

In the accompanying drawings, I have illustrated various difi'erent forms which my invention may assume.

In these'drawings, Figure 1 is an end View of a bolt and nut showlng one form of cotter-pin; Fig. 2 is a side elevation of the construction shown in'Fig.,1, the bolted parts heini in section; ig. 3 is'a side elevation of the pin shown in Figs. 1 and 2, the abutment being an enlarged portion of the pin; and

modified forms.

, Y My improved cotter-pin may be employed y for any of the ordinary purposes for which I cotter-pins are used. In Flgs. land 2, I-

have shown merely as an example of such 10 use a pair of plates 10 and 11 held to ether by a bolt 12 and castellated' nut 13, t. e nut having transverse grooves 14 in its upper surface and the bolt having one or' more transverse passages therethrough. The nut 11 0 Figs. 4 to 8 inclusive are side elevations of I body in Figsfl, 2 and 3, the body portion 15 is" formed of a wire of circular or any other desired cross-sectional form and provided intermediate of its ends with an abutment or shoulder 16 in the form of an enlarged portion of the wire. This enlarged portion 'may be readily formed by forcing one end portion endwise toward the other-to shorten the total length but increase the diameter at the desired point to form the abutment;

At the opposite side of the abutment is the extension or head 17 which may be gripped to withdraw the cotter-pin. This may be of any desired lengthalthough it should be of suflicient length to be easilygripped with the fingers or a pair of pliers and should not project out to such a distance as'might cause it to form an objectionable extension. The abutment 16 is of such size that it cannot pass through the opening receiving the of the cotter-pin andv the body of the pin is of such length that the end may be readily bent over after being through the passage as shown in Fig. 1.

To form a more effective gripping head or end, the extremity of the projecting portion 17 may have a second shoulder, abutment, enlargement or ofiset portion 18, as shown in Fig. 4, so that the pliers or other tool, or the fingers, may grip beneath it and be less liable to slip ofi' if the portion is greasy.

In Fig. 5, I have shown the abutment 16 in the form of a loop, the axis of which is substantially at right angles to the general direction of the length of the pin; while in Fig. 7, I have shown the abutment as a loop 16 with its axis substantially parallel to or in alinement with the pin.

In Fig. 6, I have shown an abutment or shoulder 16 in the form of a U-shaped loop projecting laterally from the general direction of the pin, and have shown the head or grip portion 17 in alinement with the body portion 15. The upper portion extended memes of the loop 16 may be shorter or longer, to bring the part 17 out of alinement or may be entirely omitted.

In Fig. 8, I have shown the abutment as a flattened portion 16 the flattening being produced in any suitable manner, as for instance by compressing, ounding or pinching the wire. It will 0 course be understood that the abutment may be formed in various other ways.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A cotter-pin consistingof a single piece of wire having its terminal portions substantially in almement and of substantially the same cross-sectional size and form and provided with an abutment intermediate of its ends to limit the extent to which the cotter-pin may be inserted and to leave a portion beyond said abutment which may be readily gripped to withdraw the pin.-

2. A cotter-pin consisting of a single piece or wire'substantially cylindrical in crosssection, including a body portion, an abutment or shoulder intermediate of the ends of the wire, and a head or grip portion beyond said abutment.

'3. A cotter-pin consisting of a single piece of wire, including a straight body porbent laterally from the general direction of the body intermediate of said body and head to form an abutment or shoulder limiting tion, a head or grip portion and a portion limit the extent to which the pin may be inserted, and a projection beyond said abutment adapted to be gripped to withdraw the pin.

5. A cotter-pin consisting of a single piece of .wire, having its terminal portions in alinement, and an intermediate portion bent laterally to form a shoulder or abutment.

Signed at New York, in the county of New York and State of New York, this 3d day of January, A. 1918.

PAUL E. KELEooM 

